diff --git a/Cargo.toml b/Cargo.toml
index bcca102820..17becc2f3b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,7 +28,7 @@ targets = [
 ]
 
 [dependencies]
-libc = { version = "=0.2.175", features = ["extra_traits"] }
+libc = { version = "=0.2.178", features = ["extra_traits"] }
 bitflags = "2.3.3"
 cfg-if = "1.0"
 pin-utils = { version = "0.1.0", optional = true }
diff --git a/changelog/2714.fixed.md b/changelog/2714.fixed.md
new file mode 100644
index 0000000000..6ff6146dc1
--- /dev/null
+++ b/changelog/2714.fixed.md
@@ -0,0 +1 @@
+Define `timespec_tv_nsec_t` as 32-bit on both 32- and 64-bit AIX to match the platform ABI.
diff --git a/src/sys/time.rs b/src/sys/time.rs
index 7e89c72149..11b86efb23 100644
--- a/src/sys/time.rs
+++ b/src/sys/time.rs
@@ -199,11 +199,14 @@ const TS_MAX_SECONDS: i64 = isize::MAX as i64;
 
 const TS_MIN_SECONDS: i64 = -TS_MAX_SECONDS;
 
+// AIX: libc::timespec.tv_nsec is 32-bit c_int on both 32- and 64-bit.
+#[cfg(target_os = "aix")]
+type timespec_tv_nsec_t = libc::c_int;
 // x32 compatibility
 // See https://sourceware.org/bugzilla/show_bug.cgi?id=16437
 #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
 type timespec_tv_nsec_t = i64;
-#[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
+#[cfg(not(any(target_os = "aix", all(target_arch = "x86_64", target_pointer_width = "32"))))]
 type timespec_tv_nsec_t = libc::c_long;
 
 impl From<timespec> for TimeSpec {